| Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence | |
Tian HP; Yang SQ; Cheng L; Wang Y; Jiang N(姜楠)
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| Source Publication | THEORETICAL & APPLIED MECHANICS LETTERS
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| 2013-09-10 | |
| Volume | 3Issue:5Pages:14-052002 |
| ISSN | 2095-0349 |
| Abstract | Experiments were conducted in a water tunnel by tomographic time-resolved particle image velocimetry (Tomo-TRPIV). The Reynolds number Reθ is 2 460 on the base of momentum thickness. According to the physical mechanism of the stretch and compression of multi-scale vortex structures in the wall-bounded turbulence, the topological characteristics of turbulence statistics in logarithmic layer were illustrated by local-averaged velocity structure function. During coherent structures bursting, results reveal that the topological structures of velocity gradients, velocity strain rates and vorticities behave as antisymmetric quadrupole modes. A three-layer antisymmetric quadrupole vortex packet confirms that there is a tight relationship between the outer layer and the near-wall layer. |
| Keyword | Wall-bounded Turbulence Antisymmetric Quadrupole Mode Tomo-trpiv Vortex Packet Coherent Structure |
| Subject Area | 湍流 |
| URL | 查看原文 |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/47606 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Jiang N(姜楠) |
| Recommended Citation GB/T 7714 | Tian HP,Yang SQ,Cheng L,et al. Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2013,3,5,:14-052002. |
| APA | Tian HP,Yang SQ,Cheng L,Wang Y,&姜楠.(2013).Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence.THEORETICAL & APPLIED MECHANICS LETTERS,3(5),14-052002. |
| MLA | Tian HP,et al."Antisymmetric quadrupole mode of coherent structures in wall-bounded turbulence".THEORETICAL & APPLIED MECHANICS LETTERS 3.5(2013):14-052002. |
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